Omega Red's ending shows him having killed Ryu, where a deeply distressed Ken asks him "How many lives have you ended?". Omega Red merely responds "Do you count the number of breaths you've taken?".

This is a reference to a similar scene in the manga series JoJo's Bizarre Adventure, when Willian Anthonio Zeppeli asks a similar question towards the vampire Dio Brando. William asks Dio Brando "How many lives have you sucken away to heal those wounds?", only to be answered cynically with "How many breads have you eaten in your life?".

Norimaro has an unused animation where he looks down before crouching on the ground. This was possibly a special win pose for when he had defeated Chun-Li or Sakura, where he would look up their skirts. This seems to be linked to the special intro Norimaro has with Chun-Li and Sakura.

During development Norimaro had a throw that was removed from the final version, where he shoves his fingers up the opponent's rear, a Japanese prank called kancho. This move was supposedly removed at Marvel's request.

The sprites for Norimaro's kancho throw are not present in the final game.

Norimaro has an unused hyper combo that can be found in the game files. It appears to be an anti-air attack in which a thought bubble appears above Norimaro's head, displaying various Capcom women in seductive poses. He smiles at the thought, but then suddenly suffers a massive nosebleed that sprays violently in the air in front of him. The characters that may appear in his thoughts include Chun-Li, Sakura, Cammy, Morrigan, Felicia, Anita, and Zangief.

Due to cultural differences, Norimaro, a character based on Japanese comedian Noritaro Kinashi, was not supposed to be available in the international version of the game. The code that allowed him to be a playable character was actually locked out in the programming if the game was not set to the Japanese region. However, ROM files of the game later proved that Norimaro was, in fact, originally planned to be available since all of his dialogue was translated to English. Although he is not playable in the international version without memory editing, he can still be seen in the first gallery picture in the game.

Karin, a character that wouldn't debut until Street Fighter Alpha 3 a year after the release of this title, has some prototype sprites left in the game's data. Her appearance differs greatly from her final design, being little more than a spriteswap of Sakura with combat boots and a different head.

Sprites of Dhalsim's wife Sari from Street Fighter Alpha 2 & 3 can be found within the game's data. She was going to be seen in the background whenever Dhalsim was in battle but was removed before the game was released.